Sahih al-Bukhari 366
Sahih al-Bukhari · Book 8: Prayers (Salat) · To offer Salat (prayer) with a shirt, trousers, a Tubban or a Qaba (an outer garment with full length sleeves)
Narrated Ibn `Umar:
حَدَّثَنَا عَاصِمُ بْنُ عَلِيٍّ ، قَالَ حَدَّثَنَا ابْنُ أَبِي ذِئْبٍ ، عَنِ الزُّهْرِيِّ ، عَنْ سَالِمٍ ، عَنِ ابْنِ عُمَرَ ، قَالَ سَأَلَ رَجُلٌ رَسُولَ اللَّهِ صلى الله عليه وسلم فَقَالَ مَا يَلْبَسُ الْمُحْرِمُ فَقَالَ " لاَ يَلْبَسُ الْقَمِيصَ وَلاَ السَّرَاوِيلَ وَلاَ الْبُرْنُسَ وَلاَ ثَوْبًا مَسَّهُ الزَّعْفَرَانُ وَلاَ وَرْسٌ، فَمَنْ لَمْ يَجِدِ النَّعْلَيْنِ فَلْيَلْبَسِ الْخُفَّيْنِ وَلْيَقْطَعْهُمَا حَتَّى يَكُونَا أَسْفَلَ مِنَ الْكَعْبَيْنِ " . وَعَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ صلى الله عليه وسلم مِثْلَهُ .
A person asked Allah's Messenger (ﷺ), "What should a Muhrim wear?" He replied, "He should not wear shirts, trousers, a burnus (a hooded cloak), or clothes which are stained with saffron or Wars (a kind of perfume). Whoever does not find a sandal to wear can wear Khuffs (socks made from thick fabric or leather), but these should be cut short so as not to cover the ankles.